XIN1XOUT2VIO3GND4FIER_UP5FIER_DOWN6FIER_IN7INTN8SSN9SCK10SI11SO12RSTN13VCC14CLK32OUT15CLK32IN16SENSET17LOADT18PT419PT320GND21VIO22PT223PT124EN_STOP225EN_STOP126STOP227GND28VCC29STOP130START31EN_START32EP33